The Structron Safety line from Seymour-Midwest is an excellent addition to any road crew looking to increase worker visibility during daylight and nighttime hours. Like high visibility clothing, Structron Safety tools use Safety Green colors and 3M Series 983 tape with a highly retroreflective microprismatic marking designed for enhanced visibility and detection ORCE SAFETY. which meets or exceeds all Federal Motor Vehicle Safety Standard 108 requirements, including, DOT - C2 Certification Mark requirements for reflectivity.